![]() ![]() ![]() That device was selling for nearly $900 when I updated this article. Tripp Lite sent me its model SU1000XLCD UPS to clean up the super-dirty AC in my apartment. Line interactive UPSes are more expensive than the standby alternative, which keep switch to battery power on demand. and a window AC is about 1200 watts.This type of ground loop isolator, for coaxial cables used with over-the-air antennas and cable- and satellite-TV equipment, can eliminate both visual and audible noise. That is really cheap to operate! The centeral air is on a 40amp breaker. On high it pulls 530watts, and on low it pulls 390 watts. should really help keep us cool without running hte AC. I am also pretty confident that the house is massively overbuilt. This is great, i really expect for it to make a wonderful difference (I grew up with one and am excited to have this in the house)! but not enough for the cat to get in! but one thing at a time. I now have to figure out a way to latch the bedroom door open about 2 inches. I will have to build the foam box before winter though. The fan is quite nice (4 blades, not 6 though). The low speed is awesome and really quiet! I have a split level and was unable to install it in the upper hallway due to stuff in the attic, but installed it on the center level, workes great, pulls a lot of air. High produces a modest amount of noise, rumbly, not a typical high speed fan noise. Boy the old joists in the attic must have been made from endagered hardwoods back in the 50's Had to use a lot of screws becuase a lot of the attempted naiils just bennt on the first hit! The fan works well, the manual says not ot use a rheostat, the switch has a high /low setting though. it will smell like your hot attic in and around your fan. if you have feedback air you should be able to smell it. if there is not enough venting to compensate for the air that the fan is pushing you will get a certain amount of air feed back thru the fan that you get air from the attic into the living space. i've seen it happen where the fan got installed into a small vent or ventless attic and didn't work right or not at all. Oh, make sure that you have sufficient attic venting or the fan will make more noise than it should and won't push the air that it should also. and the arc fault breaker should be the same brand as your circuit panel. if you have to run a new circuit the code is that the circuit be arc fault type. you can get by with a existing bedroom circuit if it takes 4 amps but if it takes 7 or 8 amps depending on the circuits existing load you might have to run a new circuit. as far as circuitry for that fan, depending on the size it is, as in the amount of air that it pushes, will take anywhere from 4 to 8 amps. and as you know the fan blade makes enough noise that you wouldn't here the motor if it was humming. there is nothing you can do if the fan has a vibration or hum. do this on both size of the cut joist and nail the cut joist to the cross pieces you just put in. nail to those two joists with a double piece of 2 by what ever size the joists are 2 x 6 or 2 x 8 or 2 x 10. then use the same size lumber as to go from the the joist on either side of the cut one. cutting one joist won't be any support problem. The way that i've seen them done is cut the joist. ![]()
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